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Article Dans Une Revue Journal of Biochemistry Année : 2018

Histone variants: essential actors in male genome programming

Résumé

Prior to its transmission to the offspring, the male genome has to be tightly compacted. A genome-scale histone eviction and the subsequent repackaging of DNA by protamines (Prms) direct this essential genome condensation step. The requirement for male germ cells to undergo such a dramatic and unique genome reorganization explains why these cells express the largest number of histone variants, including many testis-specific ones. Indeed, an open chromatin, nucleo-some instability and a facilitated process of histone dis-assembly are direct consequences of the presence of these histone variants in the chromatin of male germ cells. These histone-induced changes in chromatin first control a stage-specific gene expression program and then directly mediate the histone-to-Prm transition process. This review aims at summarizing and discussing a series of recent functional studies of male germ cell histone variants with a focus on their impact on the process of his-tone eviction and male genome compaction.
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Dates et versions

hal-02325860 , version 1 (22-10-2019)

Identifiants

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Naghmeh Hoghoughi, Sophie Barral, Alexandra Vargas, Sophie Rousseaux, Saadi Khochbin. Histone variants: essential actors in male genome programming. Journal of Biochemistry, 2018, 163 (2), pp.97-103. ⟨10.1093/jb/mvx079⟩. ⟨hal-02325860⟩
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